1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stolb23 [73]
3 years ago
8

A scientist is studying a new chemical he hopes will prevent insects from eating raspberry bushes. he sprays the chemical on a r

aspberry bush and places it with an unsprayed blackberry bush and some insects in a sealed room. He observes insects eating the blackberry bush, but not the raspberry bush. He concludes that the chemical works. This situation is an example of?
A. a controlled experiment
B. experiment bias
C. cultural bias
D. Skepticism
Biology
1 answer:
kondor19780726 [428]3 years ago
8 0

Answer:

The correct answer will be option-B.

Explanation:

A scientific experimental must be designed in a way that it could be able to test the predicted hypothesis.  

An experiment must divide the samples into two groups: the experimental design in which the independent variable will influence the dependent variable and the control group in which the variable to be tested is skipped and the independent variable does not influence the dependent variable.

Control group provides a reference to the experimental group, therefore, is considered important.

In the given question, since the scientist has concluded the results on the basis of his experimental groups only as it lacked a control group which could be used as reference therefore, leads to biased results on the basis of the experimental group.

Thus, Option-B is the correct answer.

You might be interested in
What are organisms that are only able to reproduce with others like themselves and
a_sh-v [17]

Answer:

C if you plug it into the sentance its the only one that makes sense

3 0
3 years ago
Read 2 more answers
. Complete the below sentences using: catalyst, intolerance, lactose, chemical reaction, reused, lactase
Black_prince [1.1K]

Answer:

The sentences can be completed as follows:

The enzyme lactase breaks down the sugar lactose.

If the body doesn’t produce much of this enzyme, people have what’s called lactose intolerance.

During the chemical reaction the enzyme doesn’t get used up, but gets reused.

Enzymes are substances that speed up chemical reactions which are also known as catalysts.

Explanation:

Enzymes can be described as molecules which act as biological catalysts i.e they are involved in speeding up a chemical reaction. The enzymes do not get used up in a chemical reaction and hence, they can be reused.

Lactase is an enzyme which helps in breaking down the sugar lactose which is commonly found in the milk. If enough lactase is not produced by a person's body, then he/she becomes unable to digest the sugar lactose. Such a condition is known as lactose intolerance.

6 0
3 years ago
Each enzyme needs a __________________ to work correctly.
frosja888 [35]

Answer:

"specific temperature"

8 0
3 years ago
What type of trees looses their leave on fall
Eva8 [605]

Answer:

deciduous trees

Explanation:

8 0
3 years ago
Read 2 more answers
Infection caused by __________ is of greatest concern to pregnant women and those with compromised immune systems.
Anarel [89]

Answer:

<em>Listeria</em>

Explanation:

<em>Listeria</em> causes invasive syndromes such as meningitis, sepsis, and stillbirth in pregnant or immunosuppressed people. It is an intracellular pathogen and affects the persons with deficient cell-mediated immunity. Bacteria from this genus are part of the normal gastrointestinal microbiota in healthy individuals. However, in immunosuppressed individuals, the bacterium uses proteins such as internalin and phospholipase C for invasion, intracellular multiplication, and cell-to-cell spread.

Pregnant women are at the increased risk of infection due to both systemic and local immunological changes that mostly occur during pregnancy. For example, local immunosuppression at the maternal-fetal interface of the placenta may support the intrauterine infection.

5 0
4 years ago
Other questions:
  • What defines a homeostatic process? Group of answer choices
    9·1 answer
  • Some experiments have multiple dependent variables and only one independent variable. If you plan to compare different streams a
    7·1 answer
  • How do you think this thermal energy plant helps<br> reduce reliance on fossil fuels?
    5·1 answer
  • The _______ stage of human fetal growth, in which cells begin to rapidly divide, follows fertilization of the egg.
    10·2 answers
  • _____ % of all species that have lived on earth are now extinct.
    14·2 answers
  • The basement membrane consists of __________ secreted by __________.
    9·1 answer
  • Which event would alter the distribution of killer whales in the world's oceans in a large way?
    6·1 answer
  • If the amino acid sequences in homologous proteins of two organisms are similar, what can you conclude about the DNA of the two
    13·1 answer
  • Do you think earth has a limit to the number of humans it can sustain
    7·1 answer
  • All the available nutrient molecules distributed in the blood form a:.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!